ABSTRACT
This project describes the design and construction of an automatic Battery charger. Automatic Battery chargers are not particularly cheap, but the protection they afford in protecting batteries against overcharging and possible battery damage is highly desirable. However the work carried out through the construction and design of an inexpensive alternative to the commercially available fully Automatic Battery Chargers, which will automatically monitor the state of the battery and cut off the charge current at the desired point when the battery is fully charged.
TABLE OF CONTENT
Content Page
Cover page i
Declaration ii
Certification iii
Dedication iv
Acknowledgement v
Abstract vi
Table of content vii
Chapter one
Introduction 1
1.1 Project Motivation 4
1.2 Aim and Objectives 4
1.3 Problem Statement 5
Chapter two
Literature Review 6
2.1 Theory and Design 7
2.1.1 Definition of a Battery 7
2.2 Chemistry of a Lead-Acid Cell 8
2.2.1 When Discharging 8
2.2.2 When Recharging 10
2.3 Effect of Temperature on Battery Operation 11
2.3.1 Battery Failure 12
2.4 Transformer 12
2.5 Rectification 14
2.5.1 Full-Wave Bridge Rectifier 15
2.6 Zener Diode 17
2.7 Silicon Controlled Rectifier (SCR) 19
2.8 Capacitors 21
2.9 Diodes 22
Chapter three
3.1 Methodology (Circuit Construction) 25
3.1.1 AC to DC Unit 25
3.1.2 Charge Monitor 28
Chapter Four
4.1 Result and Discussion 30
4.1.1 Test for the Transformer 30
4.1.2 Test for the Rectifier 30
4.1.4 Operational Amplifier Test 30
4.2 Problems Encountered 31
4.3 Components Used 31
Chapter Five
5.0 Application, Conclusion and Recommendation 32
5.1 Application 32
5.2 Conclusion 32
5.3 Recommendation 32
5.4 References
